Tri-fold mat



FIG. 1 is a perspective view of a tri-fold mat showing my new design;

FIG. 2 is a top view thereof;

FIG. 3 is a front view thereof, the rear side view being a mirror image thereof; and,

FIG. 4 is a left view thereof, the right side view being a mirror image thereof.

The bottom view is not visible during use.

The broken lines show unclaimed subject matter only and form no part of the claimed design. 

CLAIM The ornamental design for a tri-fold mat, substantially as shown and described. 